How Americans feel about the state of their lives have improved markedly in the eight years since Barack Obama was elected president, according to Gallup data released Tuesday.

In 2008, fewer than half of Americans said their life was good enough to be considered "thriving," according to Gallup. But that's changed: "The 55.4% who are thriving so far in 2016 is on pace to be the highest recorded in the nine years Gallup and Healthways have tracked it," according to the report ...